The findings renew concerns about overfishing, concerns that had partly been allayed by statistics on the global yield from marine fisheries.
The debate about how much children can and should do is not new, but several recent books are renewing concerns.
Facebook has come under fire for quietly expanding the availability of technology to automatically identify people in photos, renewing concerns about its privacy practices.
The shooting was the second in six months in a Texas courthouse, renewing concerns over security in public buildings.
In the process, CBS renewed concerns among critics about the independence of news divisions owned by media giants.
But her portraits stirred controversy while they brought her fame, renewing concerns that America's young were no longer adequately and safely kept.
The arrival of the men, who were generally young and in good physical condition, is likely to renew concerns about foreign Islamic fighters entering Bosnia covertly.
Although inflation has been largely absent this year, economic strength continues to renew concerns that the economy could overheat.
The military crackdown in Beijing renewed concerns about the British colony's scheduled return to Chinese rule in 1997 and spurred heavy selling in early June.
American manufacturers reported a sharp drop in demand last month for expensive heavy-duty items, renewing concerns about softness in the economy.